Article of manufacture for preventing accumulation of moisture upon glass surfaces



M. C. PITTMAN.

ARTICLE OF MANUFACTURE FOR PREVENTING ACCUNIULATION 0F MOISTURE UPONGLASS SURFACES.

APPLICATION FILED SEPT. 71 I920.

Patented Aug. 2, 1921.

INVENZg.

. tained.

MARY GOWPER PITTMAN, OF WASHINGTON, DISTRICT OF COLUMBIA.

ARTICLE OF MANUFACTURE FOR PREVENTING ACCUMULATION OF MOISTURE UPONGLASS SURFACES.

essence.

Specification of Letters Patent.

Patented Aug. 2, 1921.

Application filed September 7, 1920. Serial No. 408,463.

To all whom it may concern:

Be it known that I, MARY Cowrnn Prrr- MAN, a citizen of the UnitedStates, residing at lVashington, in the District of Golumbia, haveinvented a new and useful Article of Manufacture for PreventingAccumulation of Moisture Upon Glass Surfaces.

1 am aware that there are inventions for cleaning car and cab windows,wind-shields, and such glass, of dirt or dust adhering thereto, and forclearing glass surfaces of rain, snow, or other moisture falling oraccumulating thereon; that the inventions of the first kind are purelymechanical devices independent of any specific composition of matter;and that other inventions of compositions of matter, for which LettersPatent have been issued, lack usefulness because the application of themis difiicult, or the effect, when they are applied, is more or lesstemporary.

The object of my invention is, therefore, to provide a composition ofmatter in the form of an article of manufacture to be easily rubbed overtransparent glass surfaces exposed to rain or other moisture, as apreventive of the rain or other moisture which falls or accumulatesthereon impairing the transparency of the glass.

The article of manufacture comprises: 1. A pulp of cured tobacco leavesin which the concentrated juice of the plant is re- 2. Glycerin.

3. Water;

. 4. An incasing absorbent fabric.

5. A suitable holder.

In manufacturing the article I prefer to soak a strip of so-called plugor chewing tobacco, free from licorice, in such a solution ofglycerinand water that the proportionate parts of the glycerin and of thetobacco juice are about nine and eleven, respectively. When the striphas become saturated it is then incased in a piece of absorbent fabricwhich is then firmly fastened thereabout by means of a suitable holderin such fashion that the whole article of manufacture becomes aneffective rain eraser, as illustrated in the accompanying drawing, inwhich- Figure 1 is a vertical section of the entire rain eraser showing:i

(t. The pulp of tobacco leaves saturated with the above-mentionedmixture of glycerin, tobacco juice, and water.

b. The incasing absorbent fabric.

'0. The holder.

Fig. 2 is a view in perspective of the on tlre rain eraser showing theshape into which the composition of matter may be convenis entlyfashioned by incasing the saturated pulp as described above in anabsorbent abrlc, and clamplngor otherwise fastening about it asuitablebinder or holder.

Fig. 3 is a plan view of a suitable holder before it has been clamped orfastened about the composition of matter.

The advantages of the above-described articleof manufacture over othersimilar inventions are as follows:

1. The mixture of glycerin and tobacco juice, which is held in saturatedstrip of the fibrous pulp of cured tobacco leaves, does not'evaporatereadily,-especially when incased in absorbent fabric and bound aboutby asuitable holder or binder.

2. The absorbent fabric or cloth covering serves the triple office;

a. Holding in its fibers some of the solution of glycerin and tobaccojuice and transferring it readily to glass surfaces;

6. Absorbing sufficient moisture from the glass surface on which themoisture has accumulated to restore to the composition of matter themoisture which'rnay have been lost by evaporation, and thus maintain itseffectiveness as an eraser; I

0. Giving such shape and form to the composition of matter that its fullusefulness is assured.

My article of manufacture constitutes a rain eraser which is effective,enduring, everready, and may be produced and marketed at a price whichwill make it possible for every driver, motorman, engineer, andchauffeur to-be supplied with a means of increasing the safety of allkinds'of transportation.

I claim:

1. An article of manufacture for the prevention of the accumulation ofrain or other moisture on transparent glass surfaces, comprising a pulpof cured tobacco leaves saturated with a mixture of approximately nineparts of glycerin and eleven parts of tobacco nice in solution, anincasing absorbent fabric, and a suitable holder.

2. A composition of matter comprising a pulp of cured tobacco leavessaturated with a mixture of glycerin and tobacco juice in solution.

MEET COWFIIR

